Here is a 0.19L stainless steel thermos with excellent heat and cold retention, received from Ritsumeikan University, where my daughter attended. - Brand: Futurize. - University: Ritsumeikan University - Capacity: 0.19L - Heat Retention: 50°C or higher (6 hours) - Cold Retention: 12°C or lower (6 hours) - Material: Stainless steel - Inner Lid: Silicone rubber Thank you for looking.